X-ray ct device, image processing device, image processing method, and non-transitory recording medium

An image processing device, comprising:

• at least one piece of processing circuitry;
• and
• at least one memory, wherein
• the processing circuitry is configured to
• display first computed tomography (CT) image data corresponding to a first kilo electron volt (keV) value on a display with a first window width and a first window level,
• determine a second window width and a second window level respectively different from the first window width and the first window level, the second window width and the second window level being determined based on the first window width, the first window level, CT values of a specific area corresponding to the first keV value, CT values of the specific area corresponding to a second keV value different from the first keV value, statistical information regarding the CT values of the specific area corresponding to the first keV value, and statistical information regarding the CT values of the specific area corresponding to the second keV value, and
• display second CT image data corresponding to the second keV value on the display with the second window width and the second window level.

An image processing method implemented by a computer, the method comprising:

• displaying first computed tomography (CT) image data corresponding to a first kilo electron volt (keV) value on a display with a first window width and a first window level;
• determining a second window width and a second window level respectively different from the first window width and the first window level, the second window width and the second window level being determined based on the first window width, the first window level, CT values of a specific area corresponding to the first keV value, CT values of the specific area corresponding to a second keV value different from the first keV value, statistical information regarding the CT values of the specific area corresponding to the first keV value, and statistical information regarding the CT values of the specific area corresponding to the second keV value;
• and
• displaying second CT image data corresponding to the second keV value on the display with the second window width and the second window level.

A non-transitory computer readable recording medium on which programmed instructions are recorded, the programmed instructions causing a computer to execute:

• displaying first computed tomography (CT) image data corresponding to a first kilo electron volt (keV) value on a display with a first window width and a first window level;
• determining a second window width and a second window level respectively different from the first window width and the first window level, the second window width and the second window level being determined based on the first window width, the first window level, CT values of a specific area corresponding to the first keV value, CT values of the specific area corresponding to a second keV value different from the first keV value, statistical information regarding the CT values of the specific area corresponding to the first keV value, and statistical information regarding the CT values of the specific area corresponding to the second keV value;
• and
• displaying second CT image data corresponding to the second keV value on the display with the second window width and the second window level.